Analysis of wood pulp extracts utilizing gas chromatography-mass spectroscopy

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dc.contributor.authorSequeira, Anna J.en
dc.contributor.committeechairTaylor, Larry T.en
dc.contributor.committeememberAnderson, Mark R.en
dc.contributor.committeememberGlasser, Wolfgang G.en
dc.contributor.committeememberMason, John G.en
dc.contributor.committeememberMerola, Joseph S.en
dc.contributor.departmentChemistryen
dc.date.accessioned2014-03-14T21:21:30Zen
dc.date.adate2005-10-19en
dc.date.available2014-03-14T21:21:30Zen
dc.date.issued1991en
dc.date.rdate2005-10-19en
dc.date.sdate2005-10-19en
dc.description.abstractWood pulp mill effluents continue to attract much attention due to environmental consequences. However, in comparison, very little work has been published on wood pulp extracts themselves. In this investigation, chemithermomechanical (CTMP) pulps as well as Kraft (BKP) pulps were Soxhlet extracted with solvents of different polarity. These two types of pulp extracts were then compared qualitatively using GC-FID and GC-MSD as well as quantitatively based on the percent of extractives obtained. For all the pulps studied, the percent extractives of water > ethyl acetate > cyclohexane. The CTMP extracts exhibited many more components as compared to BKP extracts for all the extractions solvents. The presence of trace chlorinated phenolics in the above wood pulp extracts was also addressed utilizing GC-ECD, GC-EIMS and GC-NCIMS. 4-MCG, 4,5-DCG, 4,5,6-TCG, 3,4,5-TCG, 2,4,6- TCP, 2,3,4,6-TeCP, PCP and 6-MCVN were discovered. Due to a lack of knowledge of the complete history of the wood pulps studied, the exact causes for their discoveries are unknown. Attempts were also made to study the feasibility of Supercritical Fluid Extraction of the above mentioned wood pulps due to the difficulties faced with Soxhlet extractions. The percent extractives obtained using SF-CO₂ and cyclohexane were found to be comparable.en
dc.description.degreePh. D.en
dc.format.extentxi, 131 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-10192005-113308en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-10192005-113308/en
dc.identifier.urihttp://hdl.handle.net/10919/39964en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V856_1991.S478.pdfen
dc.relation.isformatofOCLC# 24706987en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V856 1991.S478en
dc.subject.lcshGas chromatography -- Industrial applicationsen
dc.subject.lcshWood-pulpen
dc.titleAnalysis of wood pulp extracts utilizing gas chromatography-mass spectroscopyen
dc.typeDissertationen
dc.type.dcmitypeTexten
thesis.degree.disciplineChemistryen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.leveldoctoralen
thesis.degree.namePh. D.en

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